Perhaps a corruption of 'Owphiyr; Uphaz, a famous gold region -- Uphaz.
see HEBREW 'Owphiyr
H210. Uphaz
אוּפָז ( proper name, of a location unknown & dubious) whence came gold, מֵא ׳זָהָב Jeremiah 10:9; א ׳ֶכּתֶם Daniel 10:5; so Thes 1 Kings 10:18 מוּפָז זָהָב (מוּפָז = ׳מֵא); but ᵐ5 δόκιμος, & 2 Chronicles 9:17 טָהוֺר, whence MV Klo make מוּפָז Hoph`al Participle from פזז q. v. Klo reads אוֺפִיר (q. v.) for אוּפָז Jeremiah 10:9; Daniel 10:5, in view of אוֺפִיר כֶּתֶם Isaiah 13:12. **Corrupt, see SiegfThLz, Nov. 7, 1883, 530; he explained ׳מֵא Jeremiah 10:9 as error for מוּפָז 1 Kings 10:18, and ׳א Daniel 10:5 as borrowed from Jeremiah 10:9; in 10:9 Gie reads מֵאוֺפִיר, Du either this or מוּפָז (see פזז); read מֵאוֺפִיר perhaps also Daniel 10:5 (Dr).